A team has containerised its application and wants to keep the container image as its unit of deployment. It does not want to choose, patch, scale or pay for EC2 instances to host those containers. What should it use?
AWS Certified Cloud Practitioner (CLF-C02), objective 3. Cloud technology and services medium
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The options
Correct AWS Fargate as the launch type behind Amazon ECS or Amazon EKS
Correct. Fargate runs the containers on capacity AWS owns and manages. You declare the vCPU and memory each task needs and pay for that, with no instances in your account to size or patch.
Not correct Amazon ECS with an EC2 capacity provider
Wrong for this requirement. ECS orchestrates the containers, but with the EC2 launch type the container instances are yours: you choose the type, keep the AMI patched and manage how many are running.
Not correct EC2 instances with a container runtime installed and managed by the team
Wrong, and it is more of the same work by hand, with the orchestration to build as well. This is what ECS and EKS were created to replace.
Not correct AWS Lambda
Wrong for the stated goal. Lambda also removes all server management, but it is a function-and-event model with a fifteen-minute ceiling per invocation. The team asked to keep running containers, not to rewrite the application as functions.
Why
Two independent choices hide inside every container question. Which orchestrator: Amazon ECS is AWS's own, Amazon EKS is managed Kubernetes and is the answer when the team already has Kubernetes skills or manifests. Who owns the servers: EC2 means you do, Fargate means AWS does. So 'ECS on Fargate' and 'EKS on EC2' are both sensible sentences. Images themselves live in Amazon ECR.
Where this comes from
- Cited
- AWS exam guide task statement 3.3
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